SoundSmith Sassuro Paula and Manley Steelhead

Doesn't seem like a great match. You could try it into the MM inputs at 47K but the results would probably be suboptimal. For an otherwise versatile phono stage, the Steelhead's loading options are frustratingly limited. I say that as an owner and fan.

Although the loading options are limited, I did get good result with the Dynavector XV-1s. I used the MM input. Wish you could borrow one to try out.

It's absolutely possible! Just use the MM inputs, which avoid going through the step up transformers and you can then access the MM load settings. In the manual they state that you should feel free to use either input regardless of the type of cartridge being used. I checked the specs for the cartridge, and if it has a 0.3mV output as I found you will want to set the gain control to one of the upper settings, i.e. 55, 60, or 65 dB. I am not alone in strongly preferring the sound of the Manley Steelhead using the MM inputs even with low output MC carts. Give it a try and let us know how it works out for you!